Sash-operating mechanism



lJuly 17. 192s.

Filed Dec. 6, 1926 *Smets-sheet 1 July 17. 192s.

G. BARcLAY- SASH OPERATING. MECHANISM 'Fn-ed Dec. e, 192e 4 sheets-sheet 2 Gps taffifar .3m/62% July `17. 192s.

. l. BARCLAY SASH OPERATING lMECIIANISM Filed Dec. 6, 1926 4 Sheets-,Sheet 5 noauto/a July 17, 192s. 1,617,380

G. l. BARCLAY SASH OPERATING MCHANISM Patented July 17,1928.

UNITED STATES PATENT OFFICE.

GrU'S'IAIE IVAR BARCLAY, 0F DETROIT, MICHIGAN, ASSIGNOR T0 DETROIT STEEL PROD- UCTS COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

SASI-I-OPERATING MECHANISM.

The invention relates to sash operating mechanism and refers more particularly to power mechanism for operating sashes.

rlhe invention has for some of its objects f the provision of an improved mounting for the motorproviding for locating the power shaft of the motor parallel to the dri-ve shaft forming part of the operative connection between the motor and a sash; the provision of an improved device for actuating the switch which controls-the operation of the motor; the provision of an improved attachment-means between the pull rod operatively connected to a sash and the flexible connection such .as a chain for actuating the pull rod; the provision of an improved support for the idler over which the iiexible connection runs, as well as the portion of the pull rod connected to the ieXible conf ynection; and the provision of a brake for retarding the rotation of the drive shaft in a direction to close a sash and thereby rel duce the speed of closing of a sash and the force with which a. sash contacts rwith its frame, as well as prevent damage to the parts of the mechanism. With these as well as other objects in view, the invention resides in theV novel features of lconstri'iction and combinations and arrangements of parts 30Vas more fully hereinafter set forth.

In the. drawings Figure 1 is a perspective view of a sash operating mechanism, embodying my invention;

Figure 2 is a side elevation of a portion thereof; Figure 3 is an end view of Figure 2;

Figures 4, 5 and G are enlarged side elevations of portions'of the operating mechanism;

Figure 7 is a cross section on the line 7-7 of Figure 4:;

Figure 8 is a plan vie-w of Figure 5;

Figure 9 is an end view of Figure 6;

Figures 10 and 11 are respectively a plan view and a side elevation of the motor mounting; and y Figure 12 is .an enlarged cross section on the line 12-12 of Figure 2.

The mechanism herewith shown is designed particularly for operating vertical swinging sashes inunison and comprises longitudinally movable pull rods 1 which are operatively connected to the sashes to open and close the same upon movements in Application `filed December 6, 1926. Serial No. 152,977.

opposite directions, fiexible connections 2 secured to the pull rods, gearing 3 for actuatlng'the flexible connections and an electricv motor 4t for driving the gearing. The fienible' connections are in the nature of chains having their ends connected lto the pull rods and running over the idler sprockets and the driving sprockets 6, which latter form part'of the gearing 3. The gearing 3, in addition to the driving sprockets 6, comprises rreduction gears including the worm wheel 7 meshing with the worm 8 secured upon the drive shaft 9, this drive shaft having secured at one of its ends the gear 10 which meshes with the gear 11 upon the power shaft 12 of the motor. The gearing 3 is suitably `housed within the housing 13 which may be supported upon a column by means of the brackets 14.

The motor is carried by the housing 13 and in order to provide for locatingV the power shaftof the motor parallel `to vthe drive shaft of the gearing so that the meshing gears upon the two will properly operate the motor is adjustably mounted upon the housing. In detail,`15 is a plate to whichv the motor is secured by means of the bolts 16 and nuts 17, this plate having,`as shown particularly in Figure 10, the transverse elongated openings 18 for engagement by the bolts to thereby permit transverse movement ofthe motor relative to the plate.v The plate l5 is supported from the housing 13 so that it maybe angularly adjustable relative thereto.` fFurthermore, the plate is supported by a threeoint suspension which comprises the three p 19 threadedly engaging the arms 20 of the housing 13 and having flats 21 at their lower ends for en- ,gagementby suitable tools such as wrenches.

22 are bolts which extend freely upwardly through the studs. These bolts extend upwardly through the Yplate 15 and have heads at their'lower ends below the plate for supporting thek same and are engaged at their upper'ends by thenuts 23. With this arrangement the plugs 19 may be adjustably threadedlyengaged by the arms of the housing while the nuts 23 are slightly loosened to provide for locating-the power shaft of the motor in parallelism to the drive shaft of the gearing. The nuts 23 may then be tightened.

` To connect the ends of the chains 2 to the `pull rods 1, I have provided the attachment loo member 24 which has the stud 25 for threading into the end of the pull rod l. One end of the chain extends in alignment with the pull rod and is connected thereto by means of the pin 26, the attachment member also preferably having upstanding projections 27 for engaging behind the adjacent link pivots and assisting in connecting this end of the chain to the pull rod. The attachment member also has the upstanding lug 28 which is provided with a bore extending parallel to the pull rod l for engagementb'y the eye bolt 29 connected to a link at the other end of the chain. 30 are nuts threaded upon the eye bolt and at opposite ends of the lug 2S for adjustably holding the eye bolt to the attachment member and 8l are lock nuts also threaded upon the eye bolt and abutting the nuts 30. With this arrangement it will be seen that one end oi the chain is secured to the pull rod in alignment therewith, while the other end or' the chain extends adjacent and parallel to the pull rod and is adjustably connected thereto to take up slack in the chain.

To support the idlerrsprockets 5 and the portions of the pull rods connected to the chain I have provided the plate .32 which is secured to an I-beam of the building and carries the bi'turcated member 33 between the upper ends of the arms of which is mounted an idler sprocket. An anti-friction roll 84 is mounted 4between the lower ends of the arms of this bifurcated member and is preferably shaped to lit the contour of the pull rod, thelatter resting upon the Jformer. Thus it will be seen I have Aprovided a common means for supporting both an idler sprocket and the portion of the pull rod connected to the flexible connection.

is an electric switch mounted upon the housing 13 for controlling the flow of electric currentto the motor 4. This switch is of the rotary type and is of standard construction, no invention being claimed for the same by applicant. 86 is a lever arm connected to the rotaryI part of the switch, this lever arm having openings therein for the passage of the upper and lower portions of the chain 2. 37 and 38 are devices mounted respectively upon the upper and lower vportions of the chain 2or contacting with the lever arm to throwthev switch vwhen the sashes have approximatelyv reached their limits o'l closinY and o eninfT movements respectively` These devices are alike. and therefore but one will be described in detail. 39 is the base of the device having integral transverse projections 39 for extending between the pivots ot alternate links of the chain. This base is clamped to the chain by means ot the bolt 40 which extends throughthe base and between the pivots of the intermediate chain link, the nut 41 threaded upon the bolt, and the clamping plate 42 secured against the side of the chain opposite that occupied by the base. The base has the transverse lug 43 which is provided with the transverse threaded opening 44 'for engagement by the externally threaded plug 45 having at its rear end the flats 46 for engagement by a suitable tool such as a wrench. `47 is a set screw threaded into the lug 43 and adapted to engage the plug-to hold the latter in its positions of rotative adjustment relative to the lug. 48 is a plunger slidably engaging in the plug 45 and adapted to abut the lever arm 36. This plunger has a reduced stem 49 which extends rearwardly through and slidably engages the rear end of the plug 45 and 50 is a suitable device such as a cctter pin extending through the rear end of the stem lier preventing` accidental disengagement of the plunger from the plug under the action oi the coil spring` lwhich is located within the plug and around the plunger stem and abuts the rear end ot the plug` andthe shoulder upon the plunger formed between the main portion thereof and the stem. lVith this arrangement either the device 37 or 38 may be approximately located upon the chain to locate its plunger 4S to engage and actuate the lever arm 36 at approximately the correct time. `To more accurately control the time t actuating the lever arm the plug 45 may be longitudinally adjusted relative to the base or' the device and to prevent breaking or damaging of the parts the plunger is yield-.ably held in a predetermined position so that it the mechanism does not stop immediately upon throwing 4the Switch the plunger can yield.

For the purpose otretarding the/nieve-v ment of 4the mechanism yduring the jclosing movement of the sashes, l have provided a brake which is-automatically operable. This brake is located upon the extension 52 of the :drive shaft 9 and comprises. the friction base 53 located Vconc-entrically Vci' the extension and secured tothe housing l3,`the 'friction washer 54 surrounding the extension and adapted vto engage the base 58, the friction nut 55 having its inner end adapted to engage 4the friction washer 54, .the worm 56 having teeth engaged by those ofthe nut and the lcoil spring 57. The worm surrounds and is secured to the extension 52 by means of thetransverse pin 58 so that this worm rotates with the extension ot' the drive shaft. The coil spring surrounds the worm and has one end hooked aroundthe pin 58 and the other end yextending transversely into the r 55. This nut has a series ot bores in its outer end alternatively engageable by the transverse end of the coil spring lor varying the degree of tension upon the latter. The inclination of the teeth is such that upon rotation ci' the drive shait in a direction to raise the sashe; and consequent rotation of the worm relative to the nut the nut is moved away from the friction washer, the strength of the coil spring being such asto provide for a vrelative rotation of the worin and nut. At this timethe direction of rotation is such that the tcnsion of the spring is increased,` Upon rotation of the drive shaft in the reverse direction to close the sashes and consequent rotation of its extension the worin rotates relative to the nut to force the nutv against the friction washer at which time the coil spring is under compression and tends to rotate the nut to move the saine away from the washer, the arrangement being such that the nut operates against the friction washer to force the same against the base to frictionally retard rotation of the extension and drive shaft without gripping to stop the rotation.

Vhat I claim as my, invention is:

l. In sash operating` mechanism, the coinbiiiation with a motor operatively connected toa sash, of a switch for controlling the opertioii of said motor and an adjustable and yieldably movable device carried by the connection between the motor and sash dependent upon the operation of said motor for actuating said switch.

2. In sash operating mechanism, the coinbination with a motor and means including a flexible connection for operatively connecting said motor to a sash, of a switch for controlling the operation of said motor, and a device carried by said flexible connection for actuating` said switch, said device including a base, a memberfadjustably mounted upon said base, and a plunger carried by said member.

3. In sash operating mechanism, the combination with a motor and means including a flexible connection for operatively connecting said motor to a sash, of a/switch for controlling the operation of said motor, and a device carried by said flexible connection for actuating said switch, said device including a base, a member' adjustably mounted upon said base, a plunger slidably engaging said member, and means for yieldably forcing said plunger in one direction relative to said member.

4.. In sash operating mechanism, the combination with a motor and means including a chain for operatively connecting said motor to a sash, of a switch for controlling the operation of said motor, and a device carried by said chain for actuating said switch, said device including a base mounted `upon said chain, a plug adjust-ably threadedly engaging said base, a plunger extending within and slidably engaging said plug, and a coil spring within said plug and. abutting said plunger for yieldably forcing said plunger in one direction relative to said plug.

5. In sash operating mechanism, the comvbination with a pull rod operatively coning amember mounted upon said pull rod and provided with afprojection engageable behind one of the link pivots at one endof said chain,an eyebolt connected to one of the 'link pivots at the opposite end of said chain and i'novable longitudinally relative to said member,` and means for adjusting saideye- 'boltlongitudinally relative to said member.

G. In sash operating mechanism, the combination with a pull rod yoperatively connected to a sash and a chain for longitudinally moving said pull rod, of means for connecting. said chain to said pull rod with one end of said chain in direct alignment with said pull rod and the other end of said chain arranged in substantial parallelism with said pull rod and connected thereto adjacent the connection of said first mentioned end with the pull rod. f

'i'. In sash operating mechanism, the combination with a pull rod operatively connected to a sash, a flexible connection secured to said pull rod for actuating the same, and an idler over which said flexible connection runs, of a common means for supporting said idler and the portion of said pull rod connected to said flexible connection.

8. In a sash operating mechanism, the

combinationwith a drive shaft operably connected to a sash to open and close the same, of aV motor for driving said drive shaft, and a brake automatically operating to retard rotation of the drive shaft during the closing of the sash.

9. In a sash operating mechanism, the combination with a motor and means including a flexible connection for operatively connecting said motor to a sash, of a switch for controlling the operation of said motor and an adjustable and yieldable device carried by the flexible connection aforesaid and dependent upon the operation of said motor for actuating said switch.

10. In a sash operating mechanism, the combination with pull rod operatively connected to a sash and a chain for longitudinally moving said pull rod, of means for connecting said chain to one end of said pull rod with one end of said chain in alignment with said pull rod and the other end of said chain adjustably connected to the end aforesaid of the pull rod and eX- tenfding in substantial parallelism with said pull rod.

11. In asash operating mechanism, the combination with a drive shaft operatively connected to a sash, of a motor for driving said drive shaft, a iexible member for operatively connecting said motor to the sash, a switch for controlling the operation of said motor, means carried by said leXible member for actuating said switch and means automatically operating to retard rotation of said drive shaft in one direction.

12. In a sash operating mechanism, the combination With a pull rod operatively connected to a sash and a chain for longitudinally moving said pull rod, out means for connecting the opposite ends of said chain to one end oi said pull rod.

131 In a sash operating mechanism, the combination with a pull rod operatively connected to a sash and a chain tor longitudinally moving said pull rod, of a member secured to one end of said pull rod, and means i'or securing the opposite ends of said chain to said member.

14. In a sash operating mechanism, the combination with a pull rod operatively connected to a sash and a chain for longitudinally moving said pull rod, of a member secured to one end of said pull rod, means for securing one end of said chain to said member 1n alignment with the pull rod, and

means for adjustably securing the opposite end of said chain to said member adjacent the securing means aforesaid.

15. In a sash operating mechanism, the combination with a pull rod operatively connected to a sash and a chain for longitndi nally moving said pull rod, of a member secured to one end of said pull rod having a projection, means :tor securing one end yof said chain to said pull rod, and means vfor adjnstably. securing the oppositel end of said chain to said projection.

16. In a sash operating mechanism, the combination with a pull rod operatively connected to a sash and a, member for longitudinally moving said pull rod, of means for connecting said member to one end of said pull rod with one end thereof in substantially the same horizontal plane as said rod, and means Ji'or connecting the opposite end of said member to the end aforesaid of the pull rod.

In testimony whereof I'a'tiiX my signature.

GUSTAF IVAR BARCLAY. 

